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-rw-r--r--src/hostname/hostnamectl.c449
1 files changed, 449 insertions, 0 deletions
diff --git a/src/hostname/hostnamectl.c b/src/hostname/hostnamectl.c
new file mode 100644
index 0000000..7f9bb49
--- /dev/null
+++ b/src/hostname/hostnamectl.c
@@ -0,0 +1,449 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <getopt.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sd-bus.h"
+#include "sd-id128.h"
+
+#include "alloc-util.h"
+#include "architecture.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "hostname-util.h"
+#include "main-func.h"
+#include "pretty-print.h"
+#include "spawn-polkit-agent.h"
+#include "util.h"
+#include "verbs.h"
+
+static bool arg_ask_password = true;
+static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
+static char *arg_host = NULL;
+static bool arg_transient = false;
+static bool arg_pretty = false;
+static bool arg_static = false;
+
+typedef struct StatusInfo {
+ const char *hostname;
+ const char *static_hostname;
+ const char *pretty_hostname;
+ const char *icon_name;
+ const char *chassis;
+ const char *deployment;
+ const char *location;
+ const char *kernel_name;
+ const char *kernel_release;
+ const char *os_pretty_name;
+ const char *os_cpe_name;
+ const char *virtualization;
+ const char *architecture;
+ const char *home_url;
+} StatusInfo;
+
+static void print_status_info(StatusInfo *i) {
+ sd_id128_t mid = {}, bid = {};
+ int r;
+
+ assert(i);
+
+ printf(" Static hostname: %s\n", strna(i->static_hostname));
+
+ if (!isempty(i->pretty_hostname) &&
+ !streq_ptr(i->pretty_hostname, i->static_hostname))
+ printf(" Pretty hostname: %s\n", i->pretty_hostname);
+
+ if (!isempty(i->hostname) &&
+ !streq_ptr(i->hostname, i->static_hostname))
+ printf("Transient hostname: %s\n", i->hostname);
+
+ if (!isempty(i->icon_name))
+ printf(" Icon name: %s\n",
+ strna(i->icon_name));
+
+ if (!isempty(i->chassis))
+ printf(" Chassis: %s\n",
+ strna(i->chassis));
+
+ if (!isempty(i->deployment))
+ printf(" Deployment: %s\n", i->deployment);
+
+ if (!isempty(i->location))
+ printf(" Location: %s\n", i->location);
+
+ r = sd_id128_get_machine(&mid);
+ if (r >= 0)
+ printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid));
+
+ r = sd_id128_get_boot(&bid);
+ if (r >= 0)
+ printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid));
+
+ if (!isempty(i->virtualization))
+ printf(" Virtualization: %s\n", i->virtualization);
+
+ if (!isempty(i->os_pretty_name)) {
+ _cleanup_free_ char *formatted = NULL;
+ const char *t = i->os_pretty_name;
+
+ if (i->home_url) {
+ if (terminal_urlify(i->home_url, i->os_pretty_name, &formatted) >= 0)
+ t = formatted;
+ }
+
+ printf(" Operating System: %s\n", t);
+ }
+
+ if (!isempty(i->os_cpe_name))
+ printf(" CPE OS Name: %s\n", i->os_cpe_name);
+
+ if (!isempty(i->kernel_name) && !isempty(i->kernel_release))
+ printf(" Kernel: %s %s\n", i->kernel_name, i->kernel_release);
+
+ if (!isempty(i->architecture))
+ printf(" Architecture: %s\n", i->architecture);
+
+}
+
+static int show_one_name(sd_bus *bus, const char* attr) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *s;
+ int r;
+
+ r = sd_bus_get_property(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ attr,
+ &error, &reply, "s");
+ if (r < 0)
+ return log_error_errno(r, "Could not get property: %s", bus_error_message(&error, r));
+
+ r = sd_bus_message_read(reply, "s", &s);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ printf("%s\n", s);
+
+ return 0;
+}
+
+static int show_all_names(sd_bus *bus, sd_bus_error *error) {
+ StatusInfo info = {};
+
+ static const struct bus_properties_map hostname_map[] = {
+ { "Hostname", "s", NULL, offsetof(StatusInfo, hostname) },
+ { "StaticHostname", "s", NULL, offsetof(StatusInfo, static_hostname) },
+ { "PrettyHostname", "s", NULL, offsetof(StatusInfo, pretty_hostname) },
+ { "IconName", "s", NULL, offsetof(StatusInfo, icon_name) },
+ { "Chassis", "s", NULL, offsetof(StatusInfo, chassis) },
+ { "Deployment", "s", NULL, offsetof(StatusInfo, deployment) },
+ { "Location", "s", NULL, offsetof(StatusInfo, location) },
+ { "KernelName", "s", NULL, offsetof(StatusInfo, kernel_name) },
+ { "KernelRelease", "s", NULL, offsetof(StatusInfo, kernel_release) },
+ { "OperatingSystemPrettyName", "s", NULL, offsetof(StatusInfo, os_pretty_name) },
+ { "OperatingSystemCPEName", "s", NULL, offsetof(StatusInfo, os_cpe_name) },
+ { "HomeURL", "s", NULL, offsetof(StatusInfo, home_url) },
+ {}
+ };
+
+ static const struct bus_properties_map manager_map[] = {
+ { "Virtualization", "s", NULL, offsetof(StatusInfo, virtualization) },
+ { "Architecture", "s", NULL, offsetof(StatusInfo, architecture) },
+ {}
+ };
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *host_message = NULL, *manager_message = NULL;
+ int r;
+
+ r = bus_map_all_properties(bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ hostname_map,
+ 0,
+ error,
+ &host_message,
+ &info);
+ if (r < 0)
+ return r;
+
+ r = bus_map_all_properties(bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ manager_map,
+ 0,
+ error,
+ &manager_message,
+ &info);
+
+ print_status_info(&info);
+
+ return r;
+}
+
+static int show_status(int argc, char **argv, void *userdata) {
+ sd_bus *bus = userdata;
+ int r;
+
+ if (arg_pretty || arg_static || arg_transient) {
+ const char *attr;
+
+ if (!!arg_static + !!arg_pretty + !!arg_transient > 1) {
+ log_error("Cannot query more than one name type at a time");
+ return -EINVAL;
+ }
+
+ attr = arg_pretty ? "PrettyHostname" :
+ arg_static ? "StaticHostname" : "Hostname";
+
+ return show_one_name(bus, attr);
+ } else {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+
+ r = show_all_names(bus, &error);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query system properties: %s", bus_error_message(&error, r));
+
+ return 0;
+ }
+}
+
+static int set_simple_string(sd_bus *bus, const char *method, const char *value) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r = 0;
+
+ polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ method,
+ &error, NULL,
+ "sb", value, arg_ask_password);
+ if (r < 0)
+ return log_error_errno(r, "Could not set property: %s", bus_error_message(&error, -r));
+
+ return 0;
+}
+
+static int set_hostname(int argc, char **argv, void *userdata) {
+ _cleanup_free_ char *h = NULL;
+ const char *hostname = argv[1];
+ sd_bus *bus = userdata;
+ int r;
+
+ if (!arg_pretty && !arg_static && !arg_transient)
+ arg_pretty = arg_static = arg_transient = true;
+
+ if (arg_pretty) {
+ const char *p;
+
+ /* If the passed hostname is already valid, then assume the user doesn't know anything about pretty
+ * hostnames, so let's unset the pretty hostname, and just set the passed hostname as static/dynamic
+ * hostname. */
+ if (arg_static && hostname_is_valid(hostname, true))
+ p = ""; /* No pretty hostname (as it is redundant), just a static one */
+ else
+ p = hostname; /* Use the passed name as pretty hostname */
+
+ r = set_simple_string(bus, "SetPrettyHostname", p);
+ if (r < 0)
+ return r;
+
+ /* Now that we set the pretty hostname, let's clean up the parameter and use that as static
+ * hostname. If the hostname was already valid as static hostname, this will only chop off the trailing
+ * dot if there is one. If it was not valid, then it will be made fully valid by truncating, dropping
+ * multiple dots, and dropping weird chars. Note that we clean the name up only if we also are
+ * supposed to set the pretty name. If the pretty name is not being set we assume the user knows what
+ * he does and pass the name as-is. */
+ h = strdup(hostname);
+ if (!h)
+ return log_oom();
+
+ hostname = hostname_cleanup(h); /* Use the cleaned up name as static hostname */
+ }
+
+ if (arg_static) {
+ r = set_simple_string(bus, "SetStaticHostname", hostname);
+ if (r < 0)
+ return r;
+ }
+
+ if (arg_transient) {
+ r = set_simple_string(bus, "SetHostname", hostname);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int set_icon_name(int argc, char **argv, void *userdata) {
+ return set_simple_string(userdata, "SetIconName", argv[1]);
+}
+
+static int set_chassis(int argc, char **argv, void *userdata) {
+ return set_simple_string(userdata, "SetChassis", argv[1]);
+}
+
+static int set_deployment(int argc, char **argv, void *userdata) {
+ return set_simple_string(userdata, "SetDeployment", argv[1]);
+}
+
+static int set_location(int argc, char **argv, void *userdata) {
+ return set_simple_string(userdata, "SetLocation", argv[1]);
+}
+
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("hostnamectl", "1", &link);
+ if (r < 0)
+ return log_oom();
+
+ printf("%s [OPTIONS...] COMMAND ...\n\n"
+ "Query or change system hostname.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --no-ask-password Do not prompt for password\n"
+ " -H --host=[USER@]HOST Operate on remote host\n"
+ " -M --machine=CONTAINER Operate on local container\n"
+ " --transient Only set transient hostname\n"
+ " --static Only set static hostname\n"
+ " --pretty Only set pretty hostname\n\n"
+ "Commands:\n"
+ " status Show current hostname settings\n"
+ " set-hostname NAME Set system hostname\n"
+ " set-icon-name NAME Set icon name for host\n"
+ " set-chassis NAME Set chassis type for host\n"
+ " set-deployment NAME Set deployment environment for host\n"
+ " set-location NAME Set location for host\n"
+ "\nSee the %s for details.\n"
+ , program_invocation_short_name
+ , link
+ );
+
+ return 0;
+}
+
+static int verb_help(int argc, char **argv, void *userdata) {
+ return help();
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_ASK_PASSWORD,
+ ARG_TRANSIENT,
+ ARG_STATIC,
+ ARG_PRETTY
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "transient", no_argument, NULL, ARG_TRANSIENT },
+ { "static", no_argument, NULL, ARG_STATIC },
+ { "pretty", no_argument, NULL, ARG_PRETTY },
+ { "host", required_argument, NULL, 'H' },
+ { "machine", required_argument, NULL, 'M' },
+ { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ return version();
+
+ case 'H':
+ arg_transport = BUS_TRANSPORT_REMOTE;
+ arg_host = optarg;
+ break;
+
+ case 'M':
+ arg_transport = BUS_TRANSPORT_MACHINE;
+ arg_host = optarg;
+ break;
+
+ case ARG_TRANSIENT:
+ arg_transient = true;
+ break;
+
+ case ARG_PRETTY:
+ arg_pretty = true;
+ break;
+
+ case ARG_STATIC:
+ arg_static = true;
+ break;
+
+ case ARG_NO_ASK_PASSWORD:
+ arg_ask_password = false;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ return 1;
+}
+
+static int hostnamectl_main(sd_bus *bus, int argc, char *argv[]) {
+
+ static const Verb verbs[] = {
+ { "status", VERB_ANY, 1, VERB_DEFAULT, show_status },
+ { "set-hostname", 2, 2, 0, set_hostname },
+ { "set-icon-name", 2, 2, 0, set_icon_name },
+ { "set-chassis", 2, 2, 0, set_chassis },
+ { "set-deployment", 2, 2, 0, set_deployment },
+ { "set-location", 2, 2, 0, set_location },
+ { "help", VERB_ANY, VERB_ANY, 0, verb_help }, /* Not documented, but supported since it is created. */
+ {}
+ };
+
+ return dispatch_verb(argc, argv, verbs, bus);
+}
+
+static int run(int argc, char *argv[]) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ setlocale(LC_ALL, "");
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ r = bus_connect_transport(arg_transport, arg_host, false, &bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create bus connection: %m");
+
+ return hostnamectl_main(bus, argc, argv);
+}
+
+DEFINE_MAIN_FUNCTION(run);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 09:59:24 +0000